Smoking pipe



E. A. HERR SIIOKING PIPE July 2, 1940.

Qrigina'l Filed Aug. l1, 1937 III.-

I `Patented July 2, 1940 c Nc 2,206,188

PATENT OFFICE `Edward A. nerr, Philadelphia, Pa.

Application August 11, 1937, serlalfnaissos Renewed May,14,`1940 i 1 2Claims. (Cl. 13b-194) invention relates to smoking pipes, and

has for an important object thereof the provision ofadry pipe, that isto say,a pipefwherein the lower portion of; the bowl will remain dryand, accordingly, a pipe in which a clean cool smoke 1 can be `enjoyedto the full extent of the normal chargaand is a continuation in part of`myprior "application Serial N o. 118,128, led December `12,9, `1`936,`for` fsmoking pipe. Wlllany `attempts have been made `to produce a"pipeof this charactenbut these attempts have `ffailetldlle to` ,theVfactfthat certain conditions always` present in a smoking pipe have`either `been overlooked or ignored. Saliva enters the :stern of asmokingpipe through the `bit thereof due, principally, tothe fact` thatthere is` in- ,voluntary and unnoted respiration into the bit ,whichforces the secretion along the bore of the bit and finally` from` theend thereof. If this `seeretici-1 collects against the upper wall of the`borep as` it `readily does `due tothe fact thatit 1 `frequently bubblesfrom the `end of the blt, it will `creep along this wall and reach the`conduit to the bowl `withoutregard. as to Whether this` coni "duit bedisposed at such upper wall or not.

Furthermore, such respirations are often of sufficientforce to causethesecretions to be carried bodily `to the orifice and passtherethrough,

Provision of collection cavities or4 absorption means are of littleavail unless `these two factors are taken into consideraticn. A commonform of "trapping device consists of a bulbous tip for the bit havingminute openings therein and, obviously, such" openings invite capillarymovement `of the liquid to the outer surface of thebulb l where feven arelatively `slight respiration would tendto blowthe same against theupper wall `of `the stem duct. Q

An important object of this invention isthe provision of a`constructionsuch, that engage" ment of the saliva with the upper wallof the duct is, to thegreatest possible extent, eliminated so that a`conduit communicating with suchupper `wall may be disposed out of the,general `path thereof, and to further construct thepipelso tha-,teven asharp respiration cannot drive ,the liquid particles, which undersuch.,` respiration normally tend to spray, to a position adjacent themouth of such conduit. While-these`precautions will `substantiallyentirely eliminate bowl moisture in the pipe, I havefound'that even theywill `not sufce to keep the bowl completely dry since a certain amountof moisture through bubbling` of the viscous saliva at the bit inletcomes in contact with the walls of the i which i i y Fig. 1 comprisesaside elevation, partially in section, of a smoking pipe-constructed in`accordl stern and, creeping along the walls,` nally varrives` at theopening of the duct and is nally Rejected through the duct ofthe bowl.1A further object of the inventionis, accordingly, the elimination of thepossibility of this type of transfer of fluid to `the bowl.

These and other objects I attain by the construction shown in theaccompanying drawing in ance with my invention; l y `liigs.12 and 3 showvarious modifications of the `duct mounting inthe stem; and

Fig. 4 is an enlarged Viewof a portion of Fig. l.

`Referring now more particularly tothe drawing, the numeral IIJgenerallydesignates the bowl of a pipe which is provided with a stem IIdiffering from the usual stem. `in `that the cavity thereof is bothlongergand of `considerably greater diameter'than such cavities usuallyare, being preferably in the form of a straight bore of a size at its`outerend to take the neck I2 of the bit I3. l I

, A downwardly and inwardly inclining opening port `I4 is formedthroughthe wall of the bowl immediately `above the upper surface of thestem I I and adjacent thereto, and at the approximate center of theupper surface of the stem an opening I5 is formed. A small conduit I6,bent ill insubstantial L-shape, has its inner end engaged in the port I4and its cuter end engaged in the opening I5, this conduit' beingpreferably of relatively. small bore,` and so constructed that it may bereadily removed for cleaning.

`The bit neck I2, which, as previously stated, closely litsthe wall ofthe conduit, has a ccnsiderably reduced, centrally disposed extension Ilthrough which the inner end of the bit bore I8 opens centrally. Thereduction in size of the eX- tensionl'l is such that a very considerablespace I9 `is provided between the wall` of the stem cavity 20 and theouter wall of the extension in order that globules of moisture somewhatinflated by a respiration may, as a general rule, not come in` contactwith the upper wall and so form` a capillary'4 bridge permitting fluidto pass along the upper wall of the `pipe and so to the opening I5, Theinner end of `this extension is suiiiciently spaced from the opening `I5thatthe moisture in the air will tend to separate and fall tothe bottom.ofthe cavityy20before reaching the opening, thus avoiding a moist areainthe vicinity of this opening. This tendency `of the `moisture in theair to separate is materially increased by reason of the fact that theopening I is disposed well away from the blind inner end of the cavity20, providing a dead air space 2| of considerable volume which forms acushion against the inrushing jet checking the velocity of the same andincreasing its tendency to expand in the relatively more highly heatedAchamber formed by the cavity and thus permit separation of its liquidcontent. The size of this dead air space further insures a collectionbowl for liquids moving along the lower wall of the bore which is wellspaced from the point of communication with the bowl and thus insuresagainst creeping of the moisture to the conduit i6 along which, due tothe size of the bore, itfwould readily move by capillary attraction.

posals results in relatively rapid collection of moisture in the pipebowl.

As hereinbefore noted, there is a tendency of bubble-transmitted iiuidto creepalong the upper wall of the cavity 29 and in order topreventthis moisture from passing through the tube I6, I provide an enlargedopening at the mouth of the tube across which the fluid will not bridgeand obstruct the passage so that it will be blown into the same. Thismay be accomplished by employing a tube of normal size, as'shown inFigs. l, 2 and 4, and terminating the end of the tube proper in spacedrelation to the inner wall of the stem i l. YSince the slight grip ofthe tube in the wood of the stem would tend to cause rapid enlargementof the opening, the'tube is continued by providing in the opening a thinextension of the tube which will vremain permanently in position forminga bushing 22 which will not only prevent damage to the stem of the pipebutwill provide asmooth wallV up which the fluids will not tend to move.The tendency of fluids to collect about thev mouth ofthe tube may bevlikewise prevented by the extension of the tube into the bore for ashort distance, as illustrated `at 23 in Fig.` 3 and at 23a in Figs. land 4.. The same result can be accomplished by employing a relativelylarge tube i641 having a thick wall and enlarging the bore of the wallat the mouth as indicated at 24. The wall of the enlarged bore at itsmouth may be bevelled as at 25 to produce a knife edge which willlikewise serve to inhibit the collection of moisture. n

It will be noted that in each instance there is, in eifect, an enlargedcontinuation of the bore of the tube, the bushings 22 providingv this inthe one instance and the actual enlargement v24 providing it in theconstruction shown in Fig. 3.

Since the constructions illustrated are capable of some modicationWithout departing from the spirit of my invention, I do not wish to beunderstood as limiting myself thereto except as hereinafter claimed.

I claim: 1. A smoking pipe comprising a bowl having a stem provided witha cavity, a bit having a neck fitting the outer end of the cavity andprovided with a considerably reduced centrally disposed extensionthrough which the inner end of the bore of the bit opens, said cavitybeing relatively large in diameter as compared to said extension andsaid cavity having a blind inner end, the cavity further having anopening in the upper wall thereof, a bushing engaged in said opening ata point disposed substantially midway between the inner end of thecavity and the inner end of the yextension yof the bit, said bushinghaving an enlarged upper end limiting its movement into the cavity andhaving its inner end extending partially into the cavity, a removabletube communieating at one end with the lower end of the bowl and at itsopposite end engaged in the bushing,

the bore of said tube being considerably less than that of the bushingand the inner end of the tube being disposed outwardly of the inner endof the bushing, the extension of said bit being suiciently spaced fromthe walls of the cavity to prevent globules of moisture passingtherefrom from normally engaging the cavity wall or being blown againstor otherwise engaging the upper portion of the cavity wall,r and beingfurther suiiiciently spaced from the inlet ofthe tube to the cavity topermit respiration-borne moisture to separate and flow to the bottoml ofthe l cavity, the inner end of the cavity being considerably spacedvfromthe point of communication of the conduit with the cavity vwhereby toprovide a relatively large dead air space beyond the tube from the bit.

2. A smoking pipe comprising a bowl having a stem provided with acavity, a bit having a neck fitting the outer end of the cavity andprovided with a considerably reduced centrally disposed extensionthrough which the inner end of the bore of the bit opens, said cavitybeing relatively large in diameter as compared to said extension andsaid cavity having a blind inner end, the

cavity further having anropening in the upper wall thereof, a bushingengaged in said opening at a point disposed substantially midway betweenthe inner end of the cavity and the inner end of the extension of thebit, said bushing being so constructed and arranged as to limit itsmovement into the cavity and having its inner end extending partiallyinto the cavity, a removable tube communicating at one end with the`lower' end of the bowl and at its opposite end engaged in the bushing,the bore of said tube being considerably less than that of the bushingand the inner end of the tube being disposed outwardly of the innerendof the bushing, the extension of said bit lbeing suiciently spaced fromthe walls of the cavity to prevent globules of moisture passingtherefrom from normally engaging EDWARD A. HERR.

